Home / 25,988.99-38,987.55-8,454.69

Finding the Fourth Proportional to 25,988.99, 38,987.55 and 8,454.69

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Solution

The fourth proportional to 25,988.99, 38,987.55 and 8,454.69 is: 12,683.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,988.99 : 38,987.55 = 8,454.69 : x
  2. Step 2: Convert to fraction form
    25,988.99/38,987.55 = 8,454.69/x
  3. Step 3: Cross multiply
    25,988.99x = 38,987.55 × 8,454.69
  4. Step 4: Simplify right side
    25,988.99x = 329,627,649.11
  5. Step 5: Solve for x
    x = 329,627,649.11/25,988.99
  6. Step 6: Final answer
    x = 12,683.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.